Abstract:
:The bone marrow microenvironment is a complex three dimensional structure where hematopoietic stem cells proliferate, mature, migrate into the sinusoidal space, and enter the circulation in an exquisitely regulated fashion. Stromal cells within the BM microenvironment provide a suitable environment for self-renewal, proliferation and differentiation of hematopoietic stem cells. Within the hematopoietic microenvironment, whether it is embryonic yolk sac, fetal liver, or adult bone marrow, microvascular endothelium not only acts as a gatekeeper controlling the trafficking and homing of hematopoietic progenitors, but also provides cellular contact and secretes cytokines that allows for the preservation of the steady state hematopoiesis. Recently, homogenous monolayers of bone marrow endothelial cells (BMEC) have been isolated and cultivated in tissue culture. Long-term coculture studies have shown that BMEC monolayers are unique type of endothelium and can support long-term proliferation of hematopoietic progenitor cells particularly megakaryocytic and myeloid progenitor cells by constitutive elaboration of lineage-specific cytokines such as G-CSF, GM-CSF, M-CSF, Kit-ligand, IL6, FLK-2 ligand, and leukemia inhibitory factor. Direct cellular contact between hematopoietic progenitor cells and BMEC monolayers through specific adhesion molecules including beta1, beta2 integrins and selectins play a critical role in trafficking and possibly proliferation of hematopoietic stem cells. Dysfunction of microvascular endothelial cells within the hematopoietic microenvironment may result in stem cell disorders and progression to aplastic anemias, and contribute to graft failure during bone marrow transplantation. Further studies on the role of microvascular endothelium in the regulation of hematopoietic stem cell homing and proliferation may enhance our understanding of the pathophysiology of stem cell and leukemic disorders.
journal_name
Leuk Lymphomajournal_title
Leukemia & lymphomaauthors
Rafii S,Mohle R,Shapiro F,Frey BM,Moore MAdoi
10.3109/10428199709058305subject
Has Abstractpub_date
1997-11-01 00:00:00pages
375-86issue
5-6eissn
1042-8194issn
1029-2403journal_volume
27pub_type
杂志文章,评审abstract::Classic Hodgkin lymphoma (cHL) is a unique lymphoid malignancy with an immunosuppressed tumor microenvironment. Increased PD-L1 expression on the malignant Hodgkin Reed Sternberg (HRS) cells due to genetic amplification at chromosome 9p24.1 is likely one of the primary mechanisms for this unique biology. For this reas...
journal_title:Leukemia & lymphoma
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abstract::It is unknown whether rituximab increases the risk of second primary malignancies (SPMs) in patients with diffuse large cell B-cell lymphoma (DLBCL). We assessed SPMs in DLBCL patients diagnosed between 1996 and 2014 in comparison with the general Israeli population and dependent on rituximab treatment. Jewish patient...
journal_title:Leukemia & lymphoma
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abstract::The purpose of this phase 2 study was to determine the activity and safety of six cycles of bendamustine and eight rituximab (RB) as first-line treatment of adult patients with advanced stage non-follicular indolent non-Hodgkin lymphomas (INFL). The primary end-point was the complete response rate (CRR) with expected ...
journal_title:Leukemia & lymphoma
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abstract::We analyzed the expression of CD1d, an antigen-presenting molecule, on peripheral blood leukemic cells of cases of chronic lymphocytic leukemia (CLL) by flow cytometry. We demonstrated variable expression of CD1d on leukemic lymphocytes and an association between high expression of CD1d with shorter time to treatment ...
journal_title:Leukemia & lymphoma
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doi:10.3109/10428194.2013.803222
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abstract::The epidemiology of splenic marginal zone lymphoma (SMZL) in the United States has not been addressed. Eight years of data (2001-2008) from 17 registries of the Surveillance, Epidemiology and End Results (SEER) program were used for this study. Of the 116,411 cases of non-Hodgkin lymphoma (NHL) in the registries, 763 ...
journal_title:Leukemia & lymphoma
pub_type: 历史文章,杂志文章
doi:10.3109/10428194.2012.743655
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abstract::The increased number of CD5+ B-cells in some human autoimmune diseases, the frequent commitment of CD5+ B-cells to the production of natural autoantibodies, and the apparent involvement of these cells in the pathogenesis of the autoimmune hemolytic anemia (AIHA) in certain mouse models suggests a causal relationship b...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.3109/10428199809092684
更新日期:1998-01-01 00:00:00
abstract::The application of all-trans retinoic acid (ATRA) and arsenic trioxide (ATO) has revolutionized the treatment of acute promyelocytic leukemia (APL). More than 80-90% of patients are expected to be cured with a combination of ATRA, ATO and/or chemotherapy. In this review, we focus on the remaining obstacles to a cure f...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.1080/10428194.2019.1613540
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abstract::Colony stimulating factors reduce the duration of neutropenia following intensive chemotherapy in a variety of settings, but the advantages in the management of leukemia are inconclusive. The variations in clinical results and the high costs of granulocyte colony-stimulating factor (G-CSF) and granulocyte macrophage c...
journal_title:Leukemia & lymphoma
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abstract::Adult T-cell leukemia (ATL) is a malignancy of mature T cells that is etiologically associated with human T-cell leukemia virus type 1 (HTLV-1). The frequent manifestation of ATL is infiltration of leukemic cells into various organs. Besides certain cell adhesion molecules and matrix metalloproteineses, chemokine rece...
journal_title:Leukemia & lymphoma
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doi:10.1080/10428190400007607
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abstract::Multiple myeloma (MM) often presents with unspecific symptoms and is challenging to diagnose. We performed this DSMM/EMN-analysis via test-(retro-) and validation (prospective) study to determine the time interval from the onset of first symptoms to the diagnosis of MM. The retrospective and prospective analyses were ...
journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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doi:10.3109/10428199409073790
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abstract::There is insufficient information on the characteristics of chronic lymphocytic leukemia (CLL) in Latin American patients. Immunoglobulin variable-region heavy-chain (IGVH) gene usage and mutation status and prognostic factors were investigated in patients resident in Venezuela. The most frequently used IGVH family ge...
journal_title:Leukemia & lymphoma
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abstract::Leukemic lymphoblasts in B-lineage acute lymphoblastic leukemia (ALL) express morphologic, phenotypic and genotypic features which resemble those of B lymphocyte progenitors in normal bone marrow. Normal immature B cells and cells from most cases of B-lineage ALL rapidly die in vitro unless they are supported by bone ...
journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
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journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
doi:10.3109/10428199309149122
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journal_title:Leukemia & lymphoma
pub_type: 杂志文章
doi:10.3109/10428199809057619
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journal_title:Leukemia & lymphoma
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doi:10.1080/10428190902934928
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
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doi:10.3109/10428194.2011.625578
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abstract::Severe myelosuppression is one of the major adverse effects of Idarubicin (IDA). Especially, after two sequential therapy courses, IDA showed a stronger myelosuppression than after the first course. IDA was metabolized in liver by carbonyl reducing enzymes (CRE) to its 13-OH metabolite, idarubicinol(IDAol),which is mo...
journal_title:Leukemia & lymphoma
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doi:10.1080/10428190801947526
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journal_title:Leukemia & lymphoma
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doi:10.3109/10428199409056292
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journal_title:Leukemia & lymphoma
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journal_title:Leukemia & lymphoma
pub_type: 杂志文章,评审
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journal_title:Leukemia & lymphoma
pub_type: 临床试验,杂志文章
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更新日期:1995-12-01 00:00:00
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journal_title:Leukemia & lymphoma
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abstract::The Rai and Binet staging systems, which are used as standard methods for evaluating the prognosis of chronic lymphocytic leukemia (CLL), have some restrictions in identifying patients with early-stage CLL who will progress rapidly. To solve this defect, other prognostic parameters have become important in recent year...
journal_title:Leukemia & lymphoma
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abstract::Recently, lenalidomide and low dose dexamethasone were found to result in superior overall survival compared to lenalidomide and high dose dexamethasone. The immune suppressive effects of dexamethasone can antagonize lenalidomide immunomodulatory activity and may explain this observation. We conducted a retrospective ...
journal_title:Leukemia & lymphoma
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